After his grandfather passed away, Masaru, who was a grandmother's child, was worried about his grandmother Shizuko and decided to go see him for the first time in a while. - Shizuko, who identifies Masaru with her husband in his younger days, invites him to bed, saying, ``We used to sleep together when he came to visit us when we were little.'' - Masaru sleeps with him, but when he wakes up in the middle of the night because he feels uncomfortable, Shizuko is sucking on his dick! - Masaru is surprised. - However, Shizuko ejaculates due to her pleas and the feeling of loneliness. - The next morning, Masaru tries to leave Shizuko's house out of guilt, but she cries and says, ``It's my second life, just once,'' and they end up having sex.